Exercise 3.42:
According to the National Association of Home Builders, the aberage size of a home in 1950 was 983 square feet. The average size increased to 1500 square feet in 1970, 2080 square feet in 1990; and 2330 square feet in 2003 (San Luis Obispo Tribune, October 16, 2005).
a. Construct a time-series plot that shows how the average size of a home has changed over time.
b. If the trend of the time-series plot were to continue, what would you predict the average home size to be in 2010?

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